find /source -type f -exec sha256sum {} \; | sort > source_checksums.txt find /dest -type f -exec sha256sum {} \; | sort > dest_checksums.txt diff source_checksums.txt dest_checksums.txt If no output, your move achieved 100% extra quality. If the above sections didn’t match your intent, you likely meant one of these corrected keyword strings:
ddrescue -d -r3 /source/xxx /destination/xxx mapfile.log This automatically retries bad sectors, effectively removing hindrances. To move faster while preserving quality, use GNU Parallel : xxx hinde move extra quality
parallel -j 8 'rsync -av --checksum {} /dest/' ::: /source/xxx/* The --checksum flag verifies each byte post-move—extra quality assurance. Run a SHA-256 deep compare: find /source -type f -exec sha256sum {} \;